Tip



Jan. 11, 1938.

J. C. MORROW TIP- Filed March 27, 1956 Patented Jan. 11, 1938 UNITEDSTATES PATENT OFFICE TIP tion of Illinois Application March 27, 1936,Serial No. 71,094

10 Claims.

The present invention relates to a tip and more particularly to a tip orattachment for the spout of an oil lubricator for sealing an oil orificewhen the lubricator spout is applied to the orifice for lubricationpurposes.

In connection with high pressure oil lubrication, it is necessary, whenlubricating, to seal an oil orifice to prevent the oil being displacedoutwardly through the orifice thus leaving a dirty orifice, and also toinsure-that the oil enters the orifice and reaches the part or parts tobe lubricated.

The present invention is directed to a novel tip or attachment for oillubricators, and has for an object the provision of such a tip which maybe economically manufactured, and which is highly efficient in service.

Another object of the present invention is to provide a tip orattachment for the spout of an oil lubricator which includes an oil sealmember which is compressed against an oil orifice for sealing theorifice during lubrication,and the construction of the metal parts ofthe tip is such that these parts may be readily manufactured on suitablemachinery in quantity lots, thus reducing the cost of manufactureoi thetips.

The present invention resides-in the combination, construction andarrangements of parts illustrated in the accompanying drawing, and

while there is therein shown a preferred embodiment, it is to beunderstood that the same is susceptible of modification and changewithout departing from the spirit of the invention.

Generally speaking the tip of the present invention includes threecomponent parts: (1) a metallic sleeve adapted at one end for connectionto the lubricator spout, and open through its interior with bores ofdiiierent sizes; (2) a pilot pin which is hollow for oil passageway and40 which has a portion of its length constructed as a cylinder of suchdiameter as to fit one of the bores of the sleeve and the balance of itslength of reduced diameter and constituting the extremity of the pin;and (3) an oil seal of oil 45 resistant material which is resilient andcompressible and is constructed somewhat like a mushroom with a skirtportion and a head portion and provided with interior openings ofdifferent sizes. j v

50 An embodiment of the present invention is illustrated in theaccompanying drawing and the views thereof are as follows: 7

Figure 1 is an elevational view of a high pressure oil lubricatorproyided with a tip of the present invention.

Figure 2 is an axial sectional view through a tip constructed inaccordance with the principles of the present invention and showing itapplied to the extremity of a lubricator spout, the spout beingfragmentally shown in elevation.

Figure 3 is an axial sectional view through the oil seal.

Figure 4 is an end View of the tip looking at the top of Figure 2.

Figure 5 is a perspective View of the three con- 10 stituent partsemployed in constructing the tip of the present invention.

The drawing will now be explained.

Figure 1 illustrates a high pressure oil lubricator of the general typedisclosed in United 15 States Letters Patent to E. H. Morrow, No.1,863,911 dated June 21, 1932.

The lubricator includes a body A, a spout B comprising a part which is acasting! suitably secured to a cap 2 which latter is threaded to the 20neck of the opening of the body A.

Shown attached to the extremity of the spout B is a tip or attachment Cof the present invention.

The tip or attachment of the present invention 25 includes threecomponent parts, shown in perspective in Figure 5 and comprising asleeve D,

a passaged or hollow pilot pin E and an oil seal F.

The sleeve D is herein illustrated as having a 30 polygonally formed end3 for receiving a wrench or other suitable tool to secure the sleeve tothe lubricator spout B. The interior of the portion 3 is threaded at 4.

In this respect it may be understood that the sleeve could beconstructed so as to threadedly engage the interior of a spout extremityas well as the exterior here shown The balance of the sleeve D is openthrough its interior and bored to form portions of different diameters.The endmost bore, that is, the bore adjacent the end remote from thepolygonal portion 3 is of maximum diameter with the wall defining thebore being convergent inwardly, as at 5. This bore communicates with acylindrical bore 6 which in turn communicates with a bore l of minimumdiameter. The interior portion of the sleeve between the bores 6 and 1forms an inclined shoulder 8.

The pilot pin E is hollow throughout its length to provide oilpassageway 9; preferably this passageway is tapered from the inner endto" the outer end of the pin. The exterior of the pin E, for a greaterportion of its l'engthis formed as a cylinder 'IU with'the balance ofthe portion of the oil orifice against length of the pin being ofreduced diameter as I I. The reduced end I I of the pin is the outer endof the pin when assembled in the sleeve and constitutes a pilot forinsertion in an 'oil hole or orifice when the lubricator is theretoapplied for lubrication purposes. The cylindrical portion ID of the pinmay have one or more grooves I2 formed in it for a purpose to be laterexplained.

The oil seal F is made of resilient oil resistant material so as to haveits head I3 compressible when applied to an oil orifice. The oil seal Fis formed with a skirt I4 and a substantially semispherical head I3.Preferably the exterior of the ferent sizes, the opening I5 inthe skirtbeing greater than the opening I6 through the head. The opening I5 is ofsuch size as to snugly fit over the cylindricalportion Ill of the pilotpin while the diameter or size of the opening I6 is such asto'snugly'fit over the reduced end I I of the pilot pin. 'Preferably theend of the skirt portion I1 is reduced in thickness by means of anundercut I8 formed in the seal at the time of its manufacture. I

The. diameter of the cylindrical bore 6 of the sleeve and of thecylindrical portion IQ of the pilot pin is such as to cause the pin totightly fit the bore so that when the parts are assembled they areretained in assembled relationship by a friction fit. H

The parts are assembled as follows: 1 The'oil seal Fis applied over thepilot pin E by passing the reducedend ,iI of the pin through the openingI6 inthe head of the oil seal until the shoulder between the portions I0and I I of the pin rest against the shoulder formed between the openingsI5 and I6 in the oil seal. The pin with the oil seal on it is theninserted in the open end of the sleeve D and the pin is driven homeuntil the inner end thereof backs the shoulder 8 within the sleeve.Because of the size of the diameters of the bore 6 of the sleeve and theportion I0 of the pin the pin is tightly fitted and held'in positionwithin the sleeve. As the pin is driven home, the skirt I4 of the oilseal member is compressed between the pin and the sleeve thus forcingportions of the sleeve into the grooves I2 of the pm, as maybe observedin Figure 2, thus securely locking the oil seal in place and preventingdisplacement in service.

The parts are so constructed that when assembled the extremityoftheportion II of the pin'projects a slight distance beyond the outersurface of the head I3of the oil seal to thereby serve as a pilot forentering an oil orifice and the tip or attachment is thereto applied forlubrication purposes.

The oil seal being compressible or resilient is compressed when pressureis applied against the oil orifice by pushing the lubricator towards oragainst the orifice thereby effectively sealing the escape of oil duringlubrication. L a

'Iheparts D and E-may be readily manufac- V tured, on high speedmachinery," of suitable metal,

such as brass or steel or other suitable material, in quantity lotswhile the oil seals may be readily molded also in quantity lots.

The manner of assembling the various parts is one that requires Verylittle efiort or time so that complete tips or attachments, of thepresent invention, may be turned out in large quantities at minimumlabor cost.

The provision of the thin extremity I! of the skirt I4 of the oil sealcauses it to be deflected into one of the grooves I2 of the pilot pinwhen the parts are assembled, as may be observed in Figure 2.

It will be observed that the tip of the present invention is one whichmay be readily manufactured and assembled at minimum cost thus enablingready sale at nominal prices.

The assembly of the parts of the tip, in the manner herein described,-prevents any lubricant backing up between the interior of the oil sealand the'exterior of the pilot pin. In use, the head I3 of the seal iscompressed, when applied to an oil orifice, which forces the shoulder IQof the seal tightly against the shoulder 20 of the pilot pin and thusefiectively and positively prevents oil passage between them.

The manufacture of the pilot' pin, from steel, prevents accidentalclosure of the pin extremity, which might arise if the tip were tooforcibly applied to an: oil orifice, or when the pin is initially driveninto the sleeve D.

Making the sleeve D, asdescribed, eliminates any breakage of the tip,ifsubjected to sidewise abuse. 1 a

The invention has been described herein more or less precisely as todetails, yet it is to be understood that the invention is not to belimited thereby, as changes may be made in the arrangement andproportion of parts and equivalents may be substituted, withoutdeparting from the spirit and scope of the invention.

The invention is claimed as follows:

1. A tip for attachment to a lubricator spout, said tip including asleeve having one end. arranged for threaded connection to a lubricatorspout, a pilot pin frictionally retained within and against said sleeveand having a portion projecting beyond the other end of said sleeve, anoil seal member of resilient material having a skirt within the sleeveand wedged between the sleeve and pin and having a head overlying theother end of the sleeve and surrounding the projecting portion of saidpin inwardly or its extremity, the said sealing head being compressiblewhen applied to an oil orifice for sealing an orifice duringlubrication.

2. A tip for a lubricator spout, including a sleeve adapted to beconnected to a spout, a passaged pilot pin frictionally retained withinand against said sleeve and having a portion projecting beyond one endof the sleeve, and an oil seal member having a skirt clamped within thesleeve by said pin outwardly of the zone of frictional engagement of thepin and sleeve andhaving a head overlying said one end of the sleeve andsurrounding a part of the projecting portion of the pin.

3. A tip for a lubricator spout, including a sleeve adapted to beconnected to a spout, a passaged pilot pin frictionally retained withinand against said sleeve and having a portion projecting beyond one endof the sleeve, and an oil seal member having a skirt clamped within thesleeve by said pin outwardly of the zone of frictional-engagement of thepin and sleeve and having a head overlying said one end of the sleeveand surrounding a part 'of the projecting portion'of the pin, said pinhaving .a depression into which aportion of the seal skirt is forced bythe clamping action of the pin within-the sleeve to prevent displacementof the seal member.

4. An attachment for a lubricator discharge spout, comprising a sleeveopen from end to end and having one end adapted for threaded connectionto .a spout, a pilot pin open from end to end and having one end adaptedfor frictionally fitting within and against the sleeve and its other endprojecting beyond the other end of the sleeve, a hollow oil seal memberof resilient material having a skirt entered within the other end of thesleeve and surrounding said pin outwardly of the zone of frictionalengagement of the pin and sleeve and having a semi-spherical headoverlying said other end of the sleeve and surrounding a portion of theprojecting end of the pin, the portion of said projecting end of saidpin beyond the seal head serving as a pilot for applying said spout toan oil orifice, and said head being compressible to seal the oil orificeduring lubrication.

5. An attachment for a lubricator discharge spout comprising a sleeveopen from end to end and having one end adapted for threaded connectionto a spout, a pilot pin open from end to; end and having one endenlarged and adapted for frictionally fitting within said sleeve and itsother end of reduced diameter and projecting beyond the other end of thesleeve, a hollow oil seal member of resilient material having a skirtentered within said other end of the sleeve and surrounding the portionof reduced diameter of said pin and having a semi-spherical headoverlying said other end of said sleeve and surrounding a portion of theprojecting end of said pin, the contacting surfaces of said skirt andsleeve being convergently inclined inwardly from said other end of thesleeve to wedge the skirt between the sleeve and pin when the parts areassembled.

6. A tip or attachment for a lubricator discharge spout, comprising asleeve having one end adapted for connection: to a spout and having itsother end formed with an outwardly divergent tapered interior, a hollowpilot pin within said sleeve providing oil passageway and having aninner end portion adapted to frictionally fit with in said sleeveinwardly of the said tapered end portion, and an oil seal member ofresilient material having a part wedged between the sleeve and pin andhaving a part overlying the other end of the sleeve and about the pin,said latter part being compressible to seal an oil orifice I duringlubrication.

7. An attachment for a lubricator discharge spout, comprising a pilotpin having passageway from end to end and having portions of difierentexternal sizes, a sleeve having one end adapted to be connected to alubricator spout and having .a hollow interior formed by portions ofdifferent sizes, one of the interior portions of said sleeve beingadapted to receive the larger portion of said pin with tight fit toprevent separation of the pin and sleeve, another of the interiorportions of said sleeve being divergently tapered from said one interiorportion to the other end of the sleeve, and an oil seal member ofresilient material having a skirt wedged between the smaller portion ofsaid pin and the tapered portion of said sleeve and having acompressible sealing head overlying the said other end of the sleeve andabout the pin, the outer extremity of the smaller portion of said pinextending outwardly beyond said seal member to serve as a pilot forapplying said tip to an oil orifice.

8. An attachment for a lubricator discharge spout, comprising a passagedpilot pin having one end formed as a cylinder of one diameter and itsother end as a cylinder of less diameter, a sleeve having an internalcylindrical bore to receive the cylindrical portion of larger diameterof said pin with a tight fit, said sleeve having a tapered interiorwhich diverges outwardly from said cylindrical portion, the pin portionof less diameter extending through said tapered portion of said sleeveand projecting beyond the outer end of the sleeve, and an oil sealmember of resilient material having a skirt portion wedged between thetapered portion of the sleeve and the cylindrical portion of lessdiameter of the pin, said oil seal member having a head overlying theouter end of said sleeve and surrounding a part of the projectingportion of said pin.

9. A tip or attachment for a lubricator discharge spout, comprising asleeve having one end adapted for connection to a spout and having itsother end formed with an outwardly divergent tapered interior, a hollowpilot pin within said sleeve providing oil passageway and having aninner end portion adapted to frictionally fit within said sleeveinwardly of the said tapered portion thereof, and an oil seal member ofresilient material having a part wedged between the tapered portion ofthe sleeve and said pin and having a part overlying the other end of thesleeve and about the pin, said latter part being endwise compressible toseal an oil orifice during lubrication, and said pin and seal skirtbeing wedged Within the tapered portion of the sleeve by a driven fit.

10. A discharge tip for a high-pressure lubricator, comprising a skirtedsealing member having a head of yieldable material, a passaged pinextending endwise through said member and having a portion outwardly ofsaid head and constituting a pilot, and a sleeve about and in contactwith another portion of said pin and about and in contact with a part ofsaid member in- 55 wardly of said head, said sleeve being provided withmeans for connecting it to a lubricator.

JOHN C. MORROW.

